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Finding the Fourth Proportional to 313,563.80, 469,827.30 and 266,907.80

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Solution

The fourth proportional to 313,563.80, 469,827.30 and 266,907.80 is: 399,920.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,563.80 : 469,827.30 = 266,907.80 : x
  2. Step 2: Convert to fraction form
    313,563.80/469,827.30 = 266,907.80/x
  3. Step 3: Cross multiply
    313,563.80x = 469,827.30 × 266,907.80
  4. Step 4: Simplify right side
    313,563.80x = 125,400,571,022.94
  5. Step 5: Solve for x
    x = 125,400,571,022.94/313,563.80
  6. Step 6: Final answer
    x = 399,920.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.